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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 789 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.330 − 289 =
  2. 2.324 − 285 =
  3. 3.105 − 94 =
  4. 4.103 − 57 =
  5. 5.85 − 61 =
  6. 6.114 − 97 =
  7. 7.222 − 197 =
  8. 8.58 − 46 =
  9. 9.305 − 296 =
  10. 10.102 − 78 =
  11. 11.73 − 39 =
  12. 12.69 − 35 =
  13. 13.1026 − 992 =
  14. 14.1022 − 995 =
  15. 15.101 − 96 =
  16. 16.130 − 77 =
  17. 17.217 − 195 =
  18. 18.58 − 47 =
  19. 19.212 − 184 =
  20. 20.210 − 177 =
  21. 21.1011 − 990 =
  22. 22.227 − 189 =
  23. 23.66 − 42 =
  24. 24.320 − 291 =
  25. 25.219 − 182 =
  26. 26.126 − 90 =
  27. 27.515 − 496 =
  28. 28.86 − 68 =
  29. 29.1004 − 978 =
  30. 30.527 − 480 =
  31. 31.124 − 98 =
  32. 32.101 − 84 =
  33. 33.123 − 77 =
  34. 34.63 − 34 =
  35. 35.59 − 41 =
  36. 36.1018 − 995 =
  37. 37.329 − 286 =
  38. 38.306 − 283 =
  39. 39.1028 − 988 =
  40. 40.203 − 192 =

Answer key

  1. 41
  2. 39
  3. 11
  4. 46
  5. 24
  6. 17
  7. 25
  8. 12
  9. 9
  10. 24
  11. 34
  12. 34
  13. 34
  14. 27
  15. 5
  16. 53
  17. 22
  18. 11
  19. 28
  20. 33
  21. 21
  22. 38
  23. 24
  24. 29
  25. 37
  26. 36
  27. 19
  28. 18
  29. 26
  30. 47
  31. 26
  32. 17
  33. 46
  34. 29
  35. 18
  36. 23
  37. 43
  38. 23
  39. 40
  40. 11

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